2023 Impact factor 2.6
Hadrons and Nuclei
Eur. Phys. J. A 9, 95-107

Photoproduction of $\mathsf\eta$ and $\mathsf\eta^\prime$ mesons off nucleons close to threshold

B. Borasoy 1

Physik Department, Technische Universität München, D-85747 Garching, Germany

Received: 17 March 2000
Communicated by A. Schaefer

The importance of Born terms and resonance exchange for $\mathsf\eta$ and $\mathsf\eta^\prime$ photoproduction off both the proton and neutron within U(3) baryon chiral perturbation theory is investigated. Low-lying resonances such as the vector mesons and JP= 1/2+, 1/2- baryon resonances are included explicitly and their contributions together with the Born terms are calculated. The coupling constants of the resonances are determined from strong and radiative decays. We obtain reasonable agreement with experimental data near threshold.

12.39.Fe Chiral Lagrangians - 13.60.Le Meson production

Copyright Società Italiana di Fisica, Springer-Verlag 2000